Miley-Cyrus-american-music-awards-2013

Miley Cyrus attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Kevin Mazur/AMA2013/WireImage)

Taylor-Swift-american-music-awards-2013

Taylor Swift attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Frazer Harrison/AMA2013/FilmMagic)

Katy-Perry-american-music-awards-2013

Singer Katy Perry attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Ariana-Grande-american-music-awards-2013

Singer Ariana Grande attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Christina-Aguilera-american-music-awards-2013

Christina Aguilera attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

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Actress Zandaya attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Jordin-Sparks-american-music-awards-2013

Singer Jordin Sparks attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Kendall-Jenner-american-music-awards-2013

Kendall Jenner attends 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Frazer Harrison/AMA2013/FilmMagic)

jennifer-hudson-american-music-awards-2013-beauty

Jennifer Hudson attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Kylie-Jenner-american-music-awards-2013

Kylie Jenner attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Lester Cohen/WireImage)

Kelly-Osbourne-american-music-awards-2013

Kelly Osbourne attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Ciara-american-music-awards-2013

Ciara attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Frazer Harrison/AMA2013/FilmMagic)

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Actress Jaimie Alexander attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Heidi-Klum-american-music-awards-2013

Heidi Klum attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Kempin/Entertainment/Getty Images)

Emma-Roberts-american-music-awards-2013

Actress Emma Roberts attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

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Actress Brandi Cyrus attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Skylar-Grey-american-music-awards-2013

Singer Skylar Grey attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Hillary-Scott-american-music-awards-2013

Singer Hillary Scott of Lady Antebellum attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

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Actress Jenna Ushkowitz attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

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Television personality Rocsi Diaz attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Lubov-Azria-american-music-awards-2013

Fashion designer Lubov Azria attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Merritt/Entertainment/Getty Images)

Adrianna-Costa-american-music-awards-2013

Singer Taylor Bright attends 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Frazer Harrison/AMA2013/FilmMagic)(Photo by Jason Merritt/Entertainment/Getty Images)

Giuliana-Rancic-american-music-awards-2013

Television personality Giuliana Rancic attends the 2013 American Music Awards at Nokia Theatre L.A. Live on November 24, 2013 in Los Angeles, California. (Photo by Jason Kempin/Entertainment/Getty Images)